Quick answer
A compact manual-focus 20mm f/2.8 introduced in 1984, with a 62mm filter thread. It weighs about 260g and focuses down to 0.25m.
Pros
- Compact at about 260g
- Close focus of 0.25m
- 62mm filter thread
- Sharp stopped down
Cons
- Manual focus only
- Soft corners at f/2.8
- Flare against bright light
Verdict
A small, classic wide for film and adapters.
About this lens
The Nikon AI-S Nikkor 20mm f/2.8 is a wide-angle prime lens covering 20mm at f/2.8 for Nikon F mount cameras. The wide view suits landscapes, architecture and environmental shots.
Nikon AI-S Nikkor 20mm f/2.8 specifications
- Brand
- Nikon
- Mount
- Nikon F
- Focal length
- 20mm
- Maximum aperture
- f/2.8
- Lens type
- Prime
- Format coverage
- full-frame
- Optical construction
- 12 elements in 9 groups
- Autofocus motor
- none
- Minimum focus distance
- 0.25 m
- Filter thread
- 62 mm
- Weight
- 260 g
- Length
- 64 mm
- Diameter
- 65 mm
Specification source: en.wikipedia.org
What can you shoot with the Nikon AI-S Nikkor 20mm f/2.8?
- Landscapes
- Architecture
- Adapted use on Z
Its bright maximum aperture handles indoor and evening light reasonably well.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 20mm | 84° | 94.5° |
| APS-C | 1.5x | 30mm | 61.9° | 71.6° |
Frequently asked questions
Is the Nikon 20mm f/2.8 AI-S sharp?
It is sharp from around f/5.6, but the corners are soft wide open.
Can I use the 20mm f/2.8 AI-S on Z cameras?
Yes, using the FTZ or FTZ II adapter. It is manual focus only; setting the lens data in the menu allows exposure metering and in-body stabilization.
What is the minimum focus distance of the 20mm f/2.8 AI-S?
0.25m, which allows close foregrounds in landscape and interior shots.
Alternatives for Nikon F from other brands
All Nikon F lensesSame mount, overlapping focal range, closest maximum aperture first.
